What is wrong when a fighter moves up or retires and then the top 2 fighters of the divisoin fight for the vacant title?

nothing. But it has to be seen as less of anaccomplishment then beating the actual champion in the ring. Say what you want but floyd beat Hernadez, castillo, Corrales, Baldo and Shane in the ring. As the greates ever, The God Ric Flaiir so aptly put it